英语翻译An accountant answered an advertisement for a job with a

英语翻译
An accountant answered an advertisement for a job with a large firm.At the end of the interview the chairman said,"One last question-- what is three times seven?" The accountant thought for a minute and replied,"Twenty-two".Outside he took his calculator and realized that he should have said twenty-one.He concluded that he had lost the job.A fortnight later,however,he was offered the post.After a few weeks,he asked the chairman why he had been appointed when he had given the wrong answer."You were the closest," the chairman replied.